Harry jones



(No Model.)

WITNESSES r .h m

H. JONES.

PUMP.

Patented June 13, 1882,.

INVBNTOR.

N. PETERS. Phoierhthcgnpher. Washingwn. By C.

UNITED STATES HARRY JONES, OF STERLING, ILLINOIS.

PUMP.

SPECIFICATION forming part of Letters Patent No. 259,548, dated June 13, 1882.

Application filed April 10, 1882. (No model.)

To all whom it may concern:

Be it known that I, HARRY JONES, of Sterling, in the county of Whiteside and State of 1llinois,have invented certain new and useful Improvementsin Pumps; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it ap pertains to make and use the same, reference being bad to the accompanying drawings, which form a part of this specification, in which- Figure 1 is a longitudinal vertical section of a pump embodying my improvement. Fig. 2 is a sectional view of the plunger on an enlarged scale, and Fig. 3 is a perspective view of the same.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to pump pistons or plungers, and is applicable alike to liftingpumps and force-pumps, both double and single acting. In the accompanying illustration of my invention I have shown it as applied to a single-acting lifting-pump; and the nature of my improvement consists in so constructing the plunger that it shall be self-packing or water-packing, by creating two currents ofwater (or air) flowing simultaneously in opposite directions and meeting between the pump'barrel and piston along its entire stroke, substantially as hereinafter more fully set forth.

Inthe accompanying drawings, Arepresents the pump-barrel, which has the usual valve and valve-seat (shown respectively at a and b) in the bottom, and the water pipe A, which reaches down into the well or cistern.

B is the sucker-rod, which is hinged in a bail, b, in the upper end of the plunger 0. The latter is of cylindrical shape, open at the top, having a convex valve-seat,c, and ballvalve d in its perforated bottom. The valve is held in place within its cage or chamber 0 by a cross-bar, f, or any other suitable means. The outside of the plunger has three circumferential grooves or channels, (shown respectively at g,h, and i.) The middle channel, h, is

deeper than the top and bottom channels, g and c, and has a series of ducts or apertures, 70 la, which extend from it in an oblique direction through the wall of the plunger. The slant or obliquity of these ducts is of importance, for the reason hereinafter stated. The plunger (which may be madeof wood or metal) should be of such diameter that it will work easilywithin the pump-barrel without friction, or with a minimum of friction, and the top and bottom grooves or channels, 9 and t, are left clear or without packing. On the upstroke of of the column of water above this will cause a jet of water to be thrown into an oblique upward direction through the slanting ducts from the inside of the plunger out into the narrow space between the plunger and pumpbarrel, as indicated by the arrows marked 5: but here these currents meet the downward currents as, when a water packing or cushion will in this manner he formed at a point, or rather on a line,intermediate between the channels g and h, which will move with the piston. This is repeated with each upstroke, the top and bottom grooves, g and t, forming deadwater chambers, which assist in equalizing the pressure of the two meeting currents as and y.

By reversing the plunger in its workingbarrel and changing the position of the valves in the latter in a manner well understood my improved plunger may be used with forcepumps with the same advantage as with litting-pumps, and will always, owing to the absence of packing, be found to work with a minimum of wear and friction.

Having thus described myinvention, I claim and desire to secure by Letters Patent of the United States-- 1. In a pump, the hollow plunger 0, of cylindrical shape, having valve d, valve-seat 0, top and bottom-channels, g and t, and central annular channel, h, and provided with oblique ducts k, slanting from the intermediate annular chamber or channel, h, in a downward direction toward the interior of the hollow pluni In testimony that I claim the foregoing as ger, substantially as and for the purpose heremy own I have hereunto affixed my signature in shown and set forth. in presence of two witnesses.

2. In a hollow pump-plunger having a valve 5 and valve-seat of suitable construction, a se- HARRY JONES.

ries of ducts, is, opening obliquely from the inside of the hollow valve to an annular cham- Witnesses: her or channel, h, on its outside, substantially LOUIS BAGGER, as and for the purpose herein shown and set AUGUST PETERSON.

1o forth. 

